Method resize_callback

olcPixelGameEngine.h:7774–7809

TY Moros

		
		//TY Moros
		static EM_BOOL resize_callback(int eventType, const EmscriptenUiEvent *event, void *userData)
		{
			// HACK ALERT!
			// 
			// Here we assume any html shell that uses 3 or more instance of the class "emscripten"
			// is using one of the default or minimal emscripten page layouts
			static bool assumeDefaultShell = EM_ASM_INT( return (document.querySelectorAll('.emscripten').length >= 3) ? 1 : 0; );
			static bool firstTry = false;

			// we to apply this style once
			if(!firstTry && assumeDefaultShell)
			{
				EM_ASM({ Module.canvas.parentNode.setAttribute('style', 'width: 100%; height: 70vh; margin-left: auto; margin-right: auto;'); });
				firstTry = true;
			}

			// get and keep the aspect ratio of the canvas
			static double aspect = EM_ASM_DOUBLE( return Module.canvas.clientWidth; ) / EM_ASM_DOUBLE( return Module.canvas.clientHeight; );

			double parentWidth = EM_ASM_DOUBLE( return (!!document.fullscreenElement) ? window.innerWidth : Module.canvas.parentElement.clientWidth; );
			double parentHeight = EM_ASM_DOUBLE( return (!!document.fullscreenElement) ? window.innerHeight : Module.canvas.parentElement.clientHeight; );

			double width = parentWidth;
			double height = parentWidth / aspect;

			if (height > parentHeight)
			{
				height = parentHeight;
				width = height * aspect;
			}
			
			// resize the canvas
			emscripten_set_canvas_element_size("#canvas", static_cast<int>(width), static_cast<int>(height));
			ptrPGE->olc_UpdateWindowSize(static_cast<int>(width), static_cast<int>(height));
			return 0;
		}
		
		//TY Moros
		static EM_BOOL keyboard_callback(int eventType, const EmscriptenKeyboardEvent* e, void* userData)